Commercial plumbing in Los Angeles
Most of the commercial calls we take in Los Angeles fall into a few kinds of property: restaurants and commercial kitchens, apartment buildings from 1920s courtyard complexes to postwar walk-ups, retail tenants on the ground floor of mixed-use blocks, and medical, dental and professional suites. The work runs from hydro jetting kitchen lines and setting interceptor pumping intervals to backflow testing and repair, commercial water heater replacement, leak tracing inside walls and slabs, repiping, fixture changes and new sewer laterals. The state license behind all of it is C-36 Plumbing #1131308, with a $25,000 contractor bond posted alongside.
Kitchen grease leaves the dish sink hot and liquid, then cools and clings to the pipe wall on its way to the interceptor, adding a layer with every service. A cable punches a narrow hole through that layer and leaves the rest behind, which is why a line snaked in the spring is choking again by summer. A hydro jetter scours the wall back to bare pipe. When a line keeps failing, a camera goes through it before we quote, so you see whether the problem is grease, a sag or a broken joint. The interceptor matters as much as the line: grease that slips past a full one coats your own lateral first and then reaches the public sewer run by LA Sanitation and Environment (LASAN), so the pumping interval is set from what your kitchen really produces.
Most commercial properties also have at least one backflow assembly, the valve set that keeps water from a fire sprinkler system, an irrigation line, a boiler or a soda fountain from flowing back into the public supply. Those assemblies are tested on the schedule the water supplier sets, usually once a year. We test them, rebuild the checks and the relief valve when one fails, replace an assembly that is past repair, and return the report in the form your supplier asks for. Inside the city of Los Angeles that supplier is LADWP; Beverly Hills, Santa Monica, Burbank and Glendale run their own water, and Culver City is served by Golden State Water Company.
Who we work for in Los Angeles
- Restaurants, bakeries, coffee bars and commercial kitchens
- Owners and managers of apartment buildings, from courtyard complexes to mid-rise blocks
- Ground-floor retail tenants in mixed-use buildings
- Medical, dental and other professional suites
- Condo associations and the common plumbing they maintain
- General contractors closing out tenant improvements
Warning signs in a commercial building
- A kitchen line that backs up again a few weeks after it was cleared
- Floor sinks and floor drains that hold water or empty slowly
- A grease interceptor with no pumping record anyone can produce
- Hot water that runs out before the last shift is done
- A backflow test notice that is past due, or a failed test result
- Water use on the bill that keeps rising while nothing else changes
Planned around your business hours
A jetter running through a kitchen during service is nobody's idea of a good night, so planned work is booked for the hours the doors are locked: early morning, late night, or the day the dining room is dark. Apartment buildings get the same courtesy: water shutoffs are scheduled and posted so residents are not caught in the shower. Breakdowns are another matter. Our 24-hour emergency response covers them on nights, weekends and holidays, and a live person answers the phone.
The paperwork works the same as it does for a house. You receive a written quote and sign off on it before a single tool comes out, whether the call came in at two in the afternoon or two in the morning.
The first visit: mapping the building
A first call to a property includes a walk through it. The plumber finds where the water service enters and tries each shutoff, sorts out which fixtures share a stack or branch, checks whether the kitchen line is cast iron, ABS or clay and how worn it is, and locates the grease interceptor, every backflow assembly and every water heater. The pressure regulator is tested too, because one that has failed lets full street pressure reach every flush valve and faucet in the building, and on hillside streets that pressure runs high. Gas shutoffs and connectors get a look as well, since SoCalGas stops at the meter and everything past it belongs to the property.
Those notes pay for themselves at the next emergency, when the plumber on the call can go straight to the valve that isolates the failing part of the building.
Apartment buildings and shared drain stacks
Only about 36 percent of homes in the city of Los Angeles are detached houses. Most Angelenos live in apartments and condos, and a large share of those buildings went up before 1980 with cast iron drain stacks shared by every unit above. A backup in a ground-floor kitchen may start with grease sent down from three floors up, and a stain on a ceiling may come from a joint in the stack rather than from the unit overhead. A camera goes into the shared line first. The footage shows which length of pipe or which branch is at fault, so the owner or the HOA board pays for one repair where it belongs, not a string of exploratory holes.
A stack that keeps backing up is rarely hiding one dropped object. Old cast iron gathers scale and corrosion along its whole length, and each cleaning buys a little time. Seeing the footage lets you choose between another cleaning, a section repair and a replacement from what the camera shows inside the pipe.